大民屯凹陷前中生界基岩石油运聚模式探讨  

Petroleum migration-accumulation pattern discussion of Pre-Mesozoic bedrock in Damintun sag

作　　者：马志宏[1] 

机构地区：[1]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010

出　　处：《石油地质与工程》2016年第2期21-24,147-148,共4页Petroleum Geology and Engineering

摘　　要：大民屯凹陷前中生界基岩探明石油地质储量占总探明石油地质储量的一半以上,是大民屯凹陷最主要的含油层。为探讨影响基岩整体石油运聚模式的类型、建立各类型的石油运聚模式图、指导前中生界基岩的进一步勘探,从已知基岩油藏出发,通过开展原油性质、油藏剖面、构造演化、声波时差与埋深关系图分析法,搞清了基岩原油类型、油藏类型及其分布特征,详细分析了前中生界基岩石油运聚条件,明确了前中生界基岩发育侧向直接、垂向间接、倒灌式三种石油运聚模式。三种运聚模式图的构建,对在大民屯凹陷南部韩三家子断阶部署两口预探井和西部斜坡带的基岩勘探起着重要的指导作用。The proved OOIP of Pre-Mesozoic bedrock in Damintun sag accounts for more than half of the total proved OOIP and the Pre-Mesozoic bedrock is of the uppermost oil layers.In order to make a discussion on the reasons influencing overall oil-bearing of the bedrock,namely the petroleum migration-accumulation pattern,establish the graph for various petroleum migration-accumulation pattern,and provide a guidance for Pre-Mesozoic bedrock exploration in the next step,starting from the known bedrock reservoirs,through analysis of oil property,reservoir profile,tectonic evolution,and the relationship analysis between acoustic travel time and buried depth,the crude oil type of bedrock,reservoir types and distribution characteristics have been made clear.On basis of these,the petroleum migration-accumulation conditions of Pre-Mesozoic bedrock have been analyzed in detail,and three petroleum migration-accumulation patterns,namely lateral direct pattern,vertical indirect pattern and reversed accumulation pattern,have been confirmed.The establishment of these three migration-accumulation patterns has provided important guidance for two exploratory wells in advance.

关 键 词：大民屯凹陷 基岩 整体含油 石油运聚模式 

分 类 号：TE112.12[石油与天然气工程—油气勘探]